I have 9mm Kimber Micro and as far as my 9mm firearms go it kicks the most just because it such a small gun. I never fired a 380 Kimber Micro but have fired my wifes 380 EZ and there is no comparison the 380EZ being a larger sized 380 is as they say EZ to shoot.

If your looking a full size M&P 9mm the felt recoil of it would be less, in my opinion, than the 380 micro. An M&P shield which I also own, would be comparable I would guess. My Kimber 9mm micro kicks more than my shields.

Remember the larger the gun the less felt recoil. I am going to say if you can handle the little Micro you can handle the Shield or any larger M&P in 9mm with no issue.